The attack on Besmaya base on Friday afternoon caused no casualties, Iraq’s Security Media Cell said in a statement.
The rockets, which were launched from the al-Dainiyah area in Diyala province, caused some material damage to the base, the military said.
On Saturday, the US-led coalition in Iraq is scheduled to hand over control of the Besmaya base, where Spain has led the training of Iraqi security forces since 2015.
No group claimed immediate responsibility for the rocket attack, Al-Monitor reported.
Over the 4th of July weekend, rockets were launched at Baghdad International Airport and the city’s heavily fortified Green Zone, which houses the US Embassy. Last month, on the eve of a highly anticipated meeting between American and Iraqi officials, a rocket landed near the US Embassy.